Motorcycle having a plurality of brake calipers acting on its rear wheel

Abstract

A motorcycle ( 10 ) is described, equipped with a rear drive wheel ( 12 ), rotatingly constrained to an oscillating arm ( 14 ) integral with the engine ( 16 ) of the motorcycle ( 10 ), at least one rear shock absorber ( 20 ), positioned between the oscillating arm ( 14 ) and the chassis ( 24 ) of the motorcycle ( 10 ), at least a first brake caliper ( 28 ) and at least a second brake caliper ( 32 ), acting on a single disc brake ( 36 ) fixed on the rim ( 38 ) of the rear drive wheel ( 12 ). The lower end ( 26 ) of the rear shock absorber ( 20 ) and the second brake caliper ( 32 ) are fixed to a plate ( 42 ) removably constrained to the oscillating arm ( 14 ) at one of its rear ends ( 14 b ). In this way, it is possible to have access to the rear drive wheel ( 12 ), and therefore remove it, without having to dismantle the second brake caliper ( 32 ) and relative transmission ( 34 ), thus facilitating the possible substitution of the wheel ( 12 ) or tire ( 46 ).

1. A motorcycle ( 10 ) equipped with a rear drive wheel ( 12 ), rotatingly constrained to an oscillating arm ( 14 ) integral with the engine ( 16 ) of the motorcycle ( 10 ), at least one rear shock absorber ( 20 ), positioned between said oscillating arm ( 14 ) and a chassis ( 24 ) of the motorcycle ( 10 ), at least a first brake caliper ( 28 ) and at least a second brake caliper ( 32 ), acting on a single brake disc ( 36 ) fixed on the rim ( 38 ) of said rear drive wheel ( 12 ), characterized in that the lower end ( 26 ) of said rear shock absorber ( 20 ) and said at least second brake caliper ( 32 ) are fixed to a plate ( 42 ) removably constrained to said oscillating arm ( 14 ) at one of two rear ends thereof ( 14   b ). 
     
     
       2. The motorcycle ( 10 ) according to  claim 1 , characterized in that said at least first brake caliper ( 28 ) is positioned inside a pass-through opening ( 48 ) situated on said oscillating arm ( 14 ). 
     
     
       3. The motorcycle ( 10 ) according to  claim 2 , characterized in that said at least first brake caliper ( 28 ) is constrained to said oscillating arm ( 14 ) by means of one or more bolts ( 50 ) which are inserted in respective holes situated in fixing protuberances ( 52 ) which protrude inside said pass-through hole ( 48 ). 
     
     
       4. The motorcycle ( 10 ) according to  claim 1 , characterized in that said plate ( 42 ) is constrained to said oscillating arm ( 14 ) at one of its rear ends ( 14   b ) by means of one or more bolts ( 44 ) each provided with a respective elastic washer. 
     
     
       5. The motorcycle ( 10 ) according to  claim 1 , characterized in that said at least first brake caliper ( 28 ) is connected to a hydraulic service braking system of the motorcycle ( 10 ) by means of at least one control pipe ( 30 ). 
     
     
       6. The motorcycle ( 10 ) according to  claim 1 , characterized in that said at least second brake caliper ( 32 ) is connected to a mechanical service braking system of the motorcycle ( 10 ) by means of at least one metallic control wire ( 34 ). 
     
     
       7. The motorcycle ( 10 ) according to  claim 1 , also comprising at least one silencer device ( 40 ) fixed onto said oscillating arm ( 14 ). 
     
     
       8. A method for the rapid dismantling of the rear drive wheel ( 12 ) in a motorcycle ( 10 ) equipped with a rear drive wheel ( 12 ) rotatingly constrained to an oscillating arm ( 14 ) integral with the engine ( 16 ) of the motorcycle ( 10 ), at least one rear shock absorber ( 20 ), positioned between said oscillating arm ( 14 ) and a chassis ( 24 ) of the motorcycle ( 10 ), at least a first brake caliper ( 28 ) and at least a second brake caliper ( 32 ), acting on a single brake disc ( 36 ) fixed on the rim ( 38 ) of said rear drive wheel ( 12 ), the lower end ( 26 ) of said rear shock absorber ( 20 ) and said at least second brake caliper ( 32 ) being fixed to a plate ( 42 ) removably constrained to said oscillating arm ( 14 ) at one of its rear ends ( 14   b ), the method comprising the following phases:
 unscrewing the bolts ( 44 ) which constrain said plate ( 42 ) to said oscillating arm ( 14 ); 
 rotating said rear shock absorber ( 20 ) around a pin which constrains its upper end ( 22 ) to said chassis ( 24 ) of the motorcycle ( 10 ), contemporaneously releasing both said shock absorber ( 20 ) and said at least second brake caliper ( 32 ) from said oscillating arm ( 14 ); 
 dismantling said at least first brake caliper ( 28 ) and said oscillating arm ( 14 ), by unscrewing the respective bolts ( 18 ) from the supports on said engine ( 16 ); and 
 removing said rear drive wheel ( 12 ) from the motorcycle ( 10 ). 
 
     
     
       9. The method according to  claim 8 , characterized in that, during the rotation phase of said rear shock absorber ( 20 ) around the pin which constrains its upper end ( 22 ) to said chassis ( 24 ) of the motorcycle ( 10 ), said at least second brake caliper ( 32 ) remains connected to a respective control means ( 34 ). 
     
     
       10. The method according to  claim 8 , characterized in that, during the dismantling phase of said at least first brake caliper ( 28 ), said at least a first brake caliper ( 28 ) remains connected to a respective control means ( 30 ).